Signaling device



W. S. WOODWARD. SIGNALING DEVICE. APPLICATION FILED ocr. 11, 1919.

WALTERS. WOODWABD, OF GREAT FALLS, MONTANA.

SIGNALING DEVICE.

To all whom my concern Be it known that I, \VALTER S. Woonwam),

a citizen of the United States of America,

and resident of Great Falls, in the county of Cascade and State of Montana, have invented certain new and useful Improvements in Signaling Devices, of which the following is a specification.

This invention relates to signaling devices, and particularly to an apparatus for use in timing theduration'of treatment of articles in vulcanizing machines or the duration of a baking processg'in tact, thexsaid invention may be 'used in diiferent industries for .the purpose of signaling an operator whenthe time has arrived to perform a duty.

I will describe the invention-in its use in connection with vulcanizing machines, and fromit an understanding of its advantages willbe gained'forits use. in other'arts.

As is well known, the treatment or baking of rubber tubes while being patched, or the repairing of casings during the vulcanizing, must be timed so as to prevent overcooking, and where a. number of vulcanizing machines are used it has been found difficult to keep track of the times when the articles being treated should be removed.

It is an object of this invention, therefore, to produce novel means whereby an alarm will be given after a certain time has elapsed, and when said signal is given an operator may observe, by numbers or other designating characters, which of the machines have been operating for the period of time indicated by the si nal, and a plurality of machines may be indicated each five minutes or each two and a half minutes by a timing device such as a clock.

A still further object of this invention is to provide novel means whereby a minute hand of the timing device will be caused to establish a circuit for supplying electricity to a signal, such as a bell, whereby the said signal will remain in action for a given period of time or until the circuit is manually interrupted. v

A still further object of this invention is to provide a novel manually operative contact with which the minute hand coacts, it being understood that the manually operated members may be multiplied so as to establish a circuit through the minute hand each two and a half or five minutes, according to 5 the requirements in practice.

With the foregoing and other objects in Specification of Letters Patent.

Patented Feb. 15, 1921.

Application filed October 11, 1919. Serial No. 330,080.

view, the invention consists in the details of construction and the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings, forming part of the specification, in which the preferred embodiment of the invention is illustrated, and in which- I Figure 1 illustrates-a plan view partly in section of a timing mechanism embodying the invention;

Fig; 2 illustrates a diagrammatic view of the circuit for the signal, and

Fig. 3illustrates'enlarged detail view of the manually operated contact and an extension of the minute therewith.

In these drawings 5 denotes a casing, havinga metal cover 6, with a glazed central opening 7, through which the dial 8 of a timing device may be observed. The said timing mechanism has the usual hour hand 9 and the usual minute hand 10, the latter carrying an extension 11, which is preferably resilient.

A series of contacts 13 are arranged around the dial in such position as to be engaged by the extension of the minute hand, if the contact is set for engagement with the minute hand, but unless so set the minute hand may be freely moved with relation to hand adapted to coact the contact without establishing a circuit in the cover, the said spring surrounding the shank and serving to urge the said shanknormally upwardly. Near the inner end of each shank there is a shoulder 18, having a notch or seat 19 which is engaged by an arm 20 of the yoke 21, the said yoke being attached to the under side of the cover and the said arm depending therefrom. The shank 15 carries a terminal or contact 22, which is engaged by the extension 11 of the minute hand when the device is set, as shown in Fig. 3, to coact with the said minute hand; but if the push button is depressed to unseat the shoulder from the arm and the said shank is slightly oscillated to carry the shoulder out of alinement with the arm, and the push button is then released,

the spring will serve to push the shank outwardly so that the terminal or contact 22 will be out of the path of travel of the extension of the minute hand and the said minute hand may then move tact without engaging it.

An apertured disk 23 is rotatable around each shank l5 and the said disk is supported on the cover 6. The disks are preferably provided with marginal numerals as here shown running from 1 to 8 and the cover is supplied with an indicating point 25 for each disk with relation to which the disk is rotatable so that the number which is 0pposite the indicator will denote the machine which has been charged and the alarm for which has been sounded when the minute hand engages the contact shank at that point. it is possible to sound of the machines each rulcanizing machines an operator could be informed by reference to this indicator when any one or the vulcanizing bakers has been in operation the limit of time set by an operator.

I claim:

1. In a signaling device, a timing mechanism having a dial and a minute hand, an

past the con By this arrangement, an alarm for any one five minutes and in carried by the extension on the minute hand, a cover for the timing mechanism under which the minute hand moves, the said cover being electrically connected to the timing mechanism, contacts extending through the cover and adapted to contact by the extension of the minute hand, a numbered movable portion associated with each contact, and means for establishing a circuit to a signal when the extension of the minute hand engages a contact.

2. In a signaling device, a timing mechanism having a minute hand, a resilient extension on the minute hand, contacts each comprising a slidable shank and a push button, with means for urging the shank out- Wardly, and a recessed shoulder on the shank engaged by an arm to hold the shank in set position, a casing for the timing mechanism electrically connected to the timing mechanism and having means for supporting the contacts, a member carried by the shank for engaging the extension of the minute hand, a signal and electric circuit. including a source of electricity, the said contact constituting one terminal of the said circuit and the minute hand constitnting the other terminal of the said circuit.

WALTER S. WOODVARD. 

